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    Wyświetlanie 1-7 z 7
    Tytuł:
    Factors influencing user story estimations: an industrial interview and a conceptual model
    Autorzy:
    MAJCHRZAK,, Marek
    MADEYSKI, Lech
    Powiązania:
    https://bibliotekanauki.pl/articles/529802.pdf
    Data publikacji:
    2016-12-31
    Wydawca:
    Wyższa Szkoła Bankowa we Wrocławiu
    Tematy:
    estimation
    user story
    agile
    defect prediction
    Scrum
    Opis:
    A proper estimation of time in user stories is a crucial task for both the IT team as well as for the customer, especially in agile projects. Although agile practices offer a lot of flexibility and promote a culture of continuous change, there are always clearly de need timeboxed periods where an IT company has to commit to delivering working soft-ware. Estimating time of user story implementation provides clarity and the opportunity to control the project by the management, yet at the same time, it can increase pressure on software developers. Thus, incorrectly estimated user stories may lead to quality problems including system malfunction, technical debt, and general user experience issues. The paper describes user story characteristics, reasons of user story estimation inaccuracy as well as a model of their potential impact on post-release defects in large IT software ventures, all derived from the conducted interview with practitioners in Capgemini software development company.
    Źródło:
    Central and Eastern European Journal of Management and Economics (CEEJME); 2016, 4; 261-280
    2353-9119
    Pojawia się w:
    Central and Eastern European Journal of Management and Economics (CEEJME)
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calculation of injury assessment for the chest wall velocity predictor by spline approximation
    Obliczanie prawdopodobieństwa obrażeń płuc spowodowanych falą podmuchu
    Autorzy:
    Szudrowicz, Marek.
    Solarz, Lech (1937-2017).
    Powiązania:
    Biuletyn Wojskowej Akademii Technicznej 2011, nr 1, s. 371-383
    Data publikacji:
    2011
    Tematy:
    Badania naukowe w wojsku
    Mechanika
    Postęp techniczny
    Fizyka
    Metody badawcze
    Wybuch
    Płuca
    Opis:
    Rys.
    Bibliogr.
    Dostawca treści:
    Bibliografia CBW
    Artykuł
    Tytuł:
    Left-hemihepatectomy as a method of treatment of locally limited Caroli disease
    Autorzy:
    Badura, Joanna
    Król, Robert
    Kurek, Adam
    Hartleb, Marek
    Cierpka, Lech
    Powiązania:
    https://bibliotekanauki.pl/articles/1396492.pdf
    Data publikacji:
    2013-11-01
    Wydawca:
    Index Copernicus International
    Tematy:
    Caroli’s disease
    segmental cystic dilatations
    hemihepatoctomy
    Opis:
    The study introduces a case of a 51-year old patient with Caroli’s disease of left liver lobe. In 2011 the patient was admitted to Clinic of General, Vascular and Transplantation Surgery. She was after first in her life incident of an acute pancreatitis and subsequent ERCP procedure with left hepatic biliary tract drainage. The lady was qualified to left-hemihepatoctomy, which was successfully conducted in our clinic. The only complication of the procedure was surgical site infection which was properly treated with typical antibiotics. One-year observation occurred no other complications and liver function was fine.
    Źródło:
    Polish Journal of Surgery; 2013, 85, 11; 663-665
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seismic and density structure of the lithosphere−asthenosphere system along transect Knipovich Ridge−Spitsbergen−Barents Sea – geological and petrophysical implications
    Autorzy:
    Krysiński, Lech
    Grad, Marek
    Mjelde, Rolf
    Czuba, Wojciech
    Guterch, Aleksander
    Powiązania:
    https://bibliotekanauki.pl/articles/2051399.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    crust
    LAB – lithosphere−asthenosphere boundary
    gravity modelling
    mantle composition
    Źródło:
    Polish Polar Research; 2013, 2; 111-138
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Carcinoembryonic antigen and matrix metalloproteinase 2 serum and peritoneal washes concentration in staging and prognosis in colorectal cancer patients
    Autorzy:
    Guzel, Tomasz
    Mirowska-Guzel, Dagmara
    Lech, Gustaw
    Wroński, Marek
    Iwanowska, Marzena
    Słodkowski, Maciej
    Powiązania:
    https://bibliotekanauki.pl/articles/1392892.pdf
    Data publikacji:
    2018
    Wydawca:
    Index Copernicus International
    Tematy:
    colorectal cancer
    CEA
    MMP-2
    peritoneal washes
    Opis:
    Purpose: The aim of the study was to determine the significance of carcinoembryonic antigen and matrix metalloproteinase 2 peritoneal washes and serum concentration in patients suffering from colorectal cancer concerning tumor staging and 5-year survival rate in these patients. Methods: 80 patients who underwent curative surgery for colorectal cancer were included in the study. Preoperative serum and intraoperative peritoneal washes CEA and MMP-2 concentrations were measured. Results: Regarding tumor penetration, CEA-s and CEA-p concentrations were higher in subsequent stages from T2 to T4. Both CEA-s and CEA-p concentrations were lower in T2 compared to T3 and T4. Significant difference of CEA-s and CEA-p was noted between T2 and T4 stages. MMP-2-s concentration was higher in T3 compared to T2, the highest MMP-2-p concentration was in T4, with no statistical significance. Regarding nodular status, a significant difference of CEA-s was noted between N0 and N1. For CEA-p, significance was found between N0 and N2 as between N1 and N2. MMP-2-s concentration was the highest in N1, MMP-2-p concentration was the highest in T4, with no statistical significance. The 5-year survival rate for all patients was 63.53%. There were significant differences in CEA-s and CEA-p concentrations between patients with negative and positive 5-year survival. Conclusion: Intraoperative peritoneal washes concentration of CEA may potentially serve as an important factor for more precise colorectal cancer staging. CEA-p and CEA-s concentrations correlate with survival rate in patients suffering from colorectal cancer and can be useful as an additional prognostic factor. The usefulness of MMP-2 measurement still requires further studies.
    Źródło:
    Polish Journal of Surgery; 2018, 90, 5; 36-43
    0032-373X
    2299-2847
    Pojawia się w:
    Polish Journal of Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selected Aspects of 3D Printing for Emergency Replacement of Structural Elements
    Autorzy:
    Jasiński, Krzysztof
    Murawski, Lech
    Kluczyk, Marcin
    Muc, Adam
    Szeleziński, Adam
    Muchowski, Tomasz
    Chodnicki, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2201888.pdf
    Data publikacji:
    2023
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    modal analysis
    cavity method
    additive method
    machine element repair
    Opis:
    The paper presents a synthetic characterization of modern methods of manufacturing or regenerating machine elements. Considered methods are machining and additive methods, in particular 3D printing in the FDM/FFF technique. For the study, the authors made samples of the holder bracket using selected methods. Samples made by machining operations, 3D printing with various filling were tested. The paper contains a technical and economic analysis of the production of a holder bracket using the discussed methods. The dynamics of steel and FDM/FFF printed samples were also assessed by determining their resonance curves. The vibration magnification fac-tors were analyzed - the quotient of the vibration amplitudes in the resonance to the static deformations that occurred under the influence of the constant force and the location of the vibration resonances - the natural frequencies for individual vibration modes. The study's main objective is to assess the possibility of emergency changing the manufacturing technology of selected machine components. The authors were interested in partially replacing costly and not environmentally friendly milling with 3D printing. Machine elements can be manufactured by printing in classical machine building and emergency conditions to replace a damaged component temporarily (e.g., on a ship, for the time of arrival at a port or shipyard). The main assumption guiding the authors during the preparation of this publication was the analysis of the possibility of using the production of "ad hoc" prepared spare parts and their use in the event of a lack of access to parts made of the intended materials.
    Źródło:
    Advances in Science and Technology. Research Journal; 2023, 17, 1; 274--289
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research of damage to the rear wheel rim in a tipper-truck
    Autorzy:
    Kubiak, Przemyslaw
    Wozniak, Marek
    Zakrzewski, Sergiusz
    Siczek, Krzysztof
    Rylski, Adam
    Mrowicki, Adam
    Matej, Jan
    Deda, Jakub
    Knap, Lech
    Powiązania:
    https://bibliotekanauki.pl/articles/2173686.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    tipper-truck
    rim
    tire
    failure
    wywrotka
    obręcz
    opona
    awaria
    Opis:
    Serious damage to the inner rim of the rear twin wheel in one dump truck was noted during the operation of the fleet performing transport tasks. It was a drive wheel, and its damage occurred while driving with a load exceeding the permissible value. The examination of selected fragments of the damaged rim surface was conducted visually as well as using a digital microscope with a portable head. The measurements of the Vickers hardness and microscopic observations of the material structure of the sample cut along the thickness of the rim disk were carried out. The drive torque loading of the twin wheels of the tipper-truck rear axle, under their mating with different kinds of road roughness and under various vertical loads of the wheels was calculated. An analysis of stress distributions in the rim modelled using the Finite Element Method was also conducted for several possible scenarios of wheel loading. The damage to the rim was caused by simultaneous action of several factors, such as overloading the car, poor condition of the tires, loading the drive wheel by a part of the vehicle weight and the driving torque, and hitting a wheel on a cavity in a dirt road, causing a temporary relief of one of the tires on a twin wheel.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 3; art. no. e141000
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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